
.background-grad {
    height: 100%;
    width: 100%;
    background: -webkit-linear-gradient(rgba(80,100,180,1), rgba(80,100,180,0.6)); /* Safari 5.1 - 6.0 */
    background: -o-linear-gradient(rgba(80,100,180,1), rgba(80,100,180,0.6)); /* Opera 11.1 - 12.0 */
    background: -moz-linear-gradient(rgba(80,100,180,1), rgba(80,100,180,0.6)); /* Firefox 3.6 - 15 */
    background: linear-gradient(rgba(80,100,180,1), rgba(80,100,180,0.6)); /* 标准的语法（必须放在最后） */
}